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Het effect van stikstof, knippen en competitie op de groei van Elymus athericus en Festuca rubra

Dubbeld, J. (2000) Het effect van stikstof, knippen en competitie op de groei van Elymus athericus en Festuca rubra. Master's Thesis / Essay, Biology.

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Abstract

At the island of Schiermonnikoog, the Netherlands, different stages of salt marsh development can be found adjacent to each other because of the extension of the island to the east. At the higher part of the salt marsh, Festuca rubra is replaced by Elymus athericus during succession. At the young salt marsh, with little clay and little nitrogen, Elymus is present but not dominant. At the older salt marsh, with a thick clay layer and high nitrogen levels, Elymus becomes dominant. Exclosure experiments show that hares seem to be able to slow down succession at the young salt marsh, but not anymore at the older salt marsh. To get more insight in the effect of hares on Elymus and Festuca, an experiment was set up with different nitrogen levels, clipping and competition present. The main question was: what are the effects of nitrogen, clipping and competition on the growth of Elymus athericus and Festuca rubra? Nitrogen had an overall positive and clipping an overall negative effect on the growth of both species. Competition had a positive effect on growth of Elymus and no effect on its allocation pattern whereas competition had an overall negative effect on growth of Festuca and caused a different allocation pattern to occur.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Biology
Thesis type: Master's Thesis / Essay
Language: Dutch
Date Deposited: 15 Feb 2018 07:31
Last Modified: 15 Feb 2018 07:31
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/9223

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